US6916858B2 - Dental adhesive composition - Google Patents

Dental adhesive composition Download PDF

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US6916858B2
US6916858B2 US10/219,740 US21974002A US6916858B2 US 6916858 B2 US6916858 B2 US 6916858B2 US 21974002 A US21974002 A US 21974002A US 6916858 B2 US6916858 B2 US 6916858B2
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adhesive composition
dental adhesive
weight
composition according
water
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US20030134934A1 (en
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Shinichi Kojima
Akishi Arita
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GC Corp
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GC Corp
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/30—Compositions for temporarily or permanently fixing teeth or palates, e.g. primers for dental adhesives

Definitions

  • the present invention relates to a dental adhesive composition to be used for adhering a dental restoration material to a tooth structure. More particularly, the present invention relates to a one-pack type dental adhesive composition capable of surely adhering both of a dental restoration material and a tooth structure and keeping an adhesive effect over a long period of time through a simple operation in which a plurality of operation steps are not required during the use as in the conventional art and in which mixing of two or more multiple components are not required in one step, in case of adhering a dental restoration material such as filling composite resins, filling compomers, fissure sealants for pit and fissure block out, root coating materials, lining materials, and resin cements, to a tooth structure such as an enamel and a dentin.
  • a dental restoration material such as filling composite resins, filling compomers, fissure sealants for pit and fissure block out, root coating materials, lining materials, and resin cements
  • dental adhesive compositions from which a strong adhesive effect is obtained through a simple operation are being demanded to adhere a dental restoration material to a tooth structure.
  • this method was complicated in terms of the adhesion operation step because it requires three steps of etching treatment ⁇ priming treatment ⁇ bonding agent application treatment. Further, according to this method, though the adhesive properties to an enamel are high, it could not be said that the adhesive properties to a dentin are satisfactory.
  • Japanese Patents Laid-Open Nos. 10-245525, JP-A-11-140383 and 2001-72523 propose one-step type adhesive compositions that do not require a pre-treatment such as an etching treatment and a priming treatment.
  • a pre-treatment such as an etching treatment and a priming treatment.
  • a multiple components-mixing type catalyst is needed as a catalyst in addition to a photo-polymerization catalyst, and hence, two or more components must be in fact packed and stored separately from the standpoint of preservation stability. For this reason, the respective components must be mixed at the time of use, and though the adhesion operation itself is of a one-step system, the mixing operation is required at the time of use. Accordingly, there was a defect that the operation is complicated.
  • Japanese Patent Laid-Open No. 2001-26511 discloses an adhesive composition comprising an acidic group-containing polymerizable compound, a water-soluble film-forming agent, water and a curing agent.
  • This adhesive composition is of a one-pack type, which does not require a pre-treatment such as an etching treatment and a priming treatment.
  • the film-forming agent containing 2-hydroxyethyl methacrylate as a major component, as used in this adhesive composition is characterized in that it can be admixed with physiological saline water.
  • such composition containing a large amount of a highly hydrophilic, polymerizable monomer such as 2-hydroxyethyl methacrylate involved a problem in durability.
  • composition when in actual clinics, the composition stays for a long period of time within an oral cavity, a polymer elutes out from a so-called hybrid (resin-impregnated) layer as a layer formed by polymerization and curing generated after highly hydrophilic polymerizable monomer component penetrates into a tooth structure, whereby leakage of edges and drop-out likely occur.
  • hybrid (resin-impregnated) layer as a layer formed by polymerization and curing generated after highly hydrophilic polymerizable monomer component penetrates into a tooth structure, whereby leakage of edges and drop-out likely occur.
  • any dental adhesive composition which is practically useful and is of a one-pack type and that does not require a mixing operation during the use has not yet been obtained. Accordingly, a novel reliable dental adhesive composition whose operation is simple and which is stable in terms of an adhesive effect within an oral cavity over a long period of time has been demanded.
  • the present invention is aimed to provide a dental adhesive composition to be used for adhering a dental restoration material to a tooth structure, which does not require a pre-treatment such as an etching treatment and a priming treatment, can be used in one step of only an adhesion operation by a bonding agent application treatment, does not require mixing of two or more components at the time of use, and that can keep a high adhesive strength within an oral cavity over a long period of time.
  • a polymerizable composition capable of being processed in one step and comprising a polymerizable monomer containing a phosphoric acid group for enhancing adhesive properties to an enamel; a polymerizable monomer containing a plurality of carboxyl groups in one molecule, or being readily reactive with water to generate a plurality of carboxyl groups in one molecule, for enhancing adhesive properties to a dentin; an acid group-free polymerizable monomer having a low solubility of water for reinforcing an adhesive layer; and water for enhancing adhesive properties to a tooth structure, in order to obtain adhesive properties that have hitherto been considered to be impossible only by photo-polymerization and to reduce a content of a hydrophilic monomer such as 2-hydroethyl methacrylate, which is a cause of occurrence of elution of a polymer elute out from a hybrid layer
  • the dental adhesive composition according to the present invention is a dental adhesive composition of a one-pack type, which comprises a polymerizable composition containing (a) 1 ⁇ 5% by weight of polymerizable monomer containing a phosphoric acid group, (b) 10 ⁇ 40% by weight of a polymerizable monomer containing a plurality of carboxyl groups in one molecule, or being readily reactive with water to generate a plurality of carboxyl groups in one molecule, (c) 20 ⁇ 40% by weight of a polymerizable monomer that is an acid group-free polymerizable monomer or a mixture of two or more acid group-free polymerizable monomers, having a solubility of water at 25° C.
  • the above-described polymerizable composition may additionally contain (g) 0.1 ⁇ 35% by weight of a water-soluble, volatile organic solvent.
  • a water-soluble, volatile organic solvent for example, one kind or a mixture of two kinds of 4-(meth)acryloxyethyl trimellitic acid and 4-(meth)acryloxyethyl trimellitic anhydride.
  • each of which is used in the polymerizable composition of the dental adhesive composition according to the present invention are each a polymerizable monomer of a methacrylate or an acrylate containing at least one unsaturated double bond in a molecule thereof.
  • the polymerizable monomer containing the phosphoric acid group as the component (a), which is used in the polymerizable composition of the dental adhesive composition according to the present invention, is a polymerizable monomer containing one or a plurality of phosphoric acid groups in one molecule. Since the phosphoric acid group exhibits a higher acidity than a carboxyl group, it is high in effects of dissolution of a smear layer of a tooth surface and dentinal decalcification and particularly, exhibits an improving effect for high adhesive properties to an enamel.
  • Examples of the phosphoric acid group-containing polymerizable monomer as the component (a), which can be used in the present invention, include 2-(meth)acryloyloxyethyl dihydrogenphosphate, bis[2-(meth)acryloyloxyethyl]hydrogenphosphate, 2-(meth)acryloyloxyethylphenyl hydrogenphosphate, 6-(meth)acryloyloxyhexyl dihydrogenphosphate, 6-(meth)acryloyloxyhexylphenyl hydrogenphosphate, 10-(meth)acryloyloxydecyl dihydrogenphosphate, 1,3-di(meth)acryloyloxy-propane-2-dihydrogenphosphate, 1,3-di(meth)-acryloyloxypropane-2-phenyl hydrogenphosphate, and bis[5- ⁇ 2-(meth)acryloyloxyethoxycarbonyl ⁇ heptyl]hydrogenphosphate.
  • 10-(meth)acryloyloxydecyl dihydrogenphosphate from the standpoints of adhesive properties and stability of the monomer per se.
  • These polymerizable monomer containing the phosphoric acid group may be used either singly or in admixture of two or more thereof.
  • the polymerizable monomer containing the phosphoric acid group as the component (a) must be contained in an amount of 1 ⁇ 5% by weight in the polymerizable composition of the dental adhesive composition.
  • the amount of the polymerizable monomer containing the phosphoric acid group as the component (a) is less than 1% by weight, the adhesive properties to the enamel are weak, whereas when it exceeds 5% by weight, the adhesive properties to the dentin are lowered.
  • the carboxyl group present in the polymerizable monomer containing a plurality of carboxyl groups in one molecule, or being readily reactive with water to generate a plurality of carboxyl groups in one molecule as the component (b) has a milder action than a phosphoric acid group, is low in a danger of collagen modification of a dentin, and particularly, exhibits an improving effect for adhesive properties to the dentin.
  • Examples of the polymerizable monomer containing a plurality of carboxyl groups in one molecule, or being readily reactive with water to generate a plurality of carboxyl groups in one molecule as the component (b), which can be used in the present invention include 4-(meth)acryloxyethyl trimellitic acid, 4-(meth)acryloxyethyl trimellitic anhydride, 4-(meth)acryloxydecyl trimellitic acid, 4-(meth)acryloxydecyl trimellitic anhydride, 11-(meth)acryloyloxy-1,1-undecanedicarboxylic acid, 1,4-di(meth)acryloyloxy pyromellitic acid, 2-(meth)acryloyloxyethyl maleic acid, 2-(meth)acryloyloxyethyl phthalic acid, and 2-(meth)acryloyloxyethyl hexahydrophthalic acid.
  • polymerizable monomers containing a plurality of carboxyl groups in one molecule, or being readily reactive with water to generate a plurality of carboxyl groups in one molecule may be used either singly or in admixture of two or more thereof.
  • 4-(meth)acryloyloxyethyl trimellitic acid and 4-(meth)acryloyloxyethyl trimellitic anhdyride from the standpoint of adhesive properties.
  • the polymerizable monomer containing a plurality of carboxyl groups in one molecule, or being readily reactive with water to generate a plurality of carboxyl groups in one molecule as the component (b) must be contained in an amount of 10 ⁇ 40% by weight in the polymerizable composition of the dental adhesive composition.
  • the amount of the polymerizable monomer containing a plurality of carboxyl groups in one molecule, or being readily reactive with water to generate a plurality of carboxyl groups in one molecule as the component (b) is less than 10% by weight, the adhesive properties to the dentin are lowered, whereas when it exceeds 40% by weight, not only an improving effect for adhesive properties is not obtained, but also the polymerization properties of the dental adhesive composition per se become worse, whereby the adhesive properties to both the enamel and the dentin are lowered.
  • Examples of the polymerizable monomer that is an acid group-free polymerizable monomer or a mixture of two or more acid group-free polymerizable monomers, having a solubility of water at 25° C. of 25% by weight or less as the component (c), which can be used in the polymerizable composition of the dental adhesive composition according to the present invention include methyl (meth)acrylate, ethyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate, isobutyl (meth)acrylate, tetrahydrofurfuryl (meth)acrylate, glycidyl (meth)acrylate, 2-methoxyethyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, benzyl (meth)acrylate, 2,2-bis[(meth)acryloxyphenyl]propane, 2,2-bis[4-(meth)acryloxydiethoxyphenyl
  • the solubility of water at 25° C. must be 25% by weight or less is as follows. That is, in the case where the solubility of water at 25° C.
  • the dental adhesive composition according to the present invention in order to make the permeability into a tooth structure and the polymerizability of the dental adhesive composition compatible with each other, it is preferred to mix the hydrophilic polymerizable monomer such as 2-hydroxyethyl methacrylate that contains a hydroxyl group with a polymerizable monomer having a good polymerizability, such as triethylene glycol dimethacrylate and di-2-methacryloxyethyl-2,2,4-trimethylhexamethylene dicarbamate, thereby adjusting the solubility of water at 25° C. to be 25% by weight or less.
  • the hydrophilic polymerizable monomer such as 2-hydroxyethyl methacrylate that contains a hydroxyl group
  • a polymerizable monomer having a good polymerizability such as triethylene glycol dimethacrylate and di-2-methacryloxyethyl-2,2,4-trimethylhexamethylene dicarbamate
  • the polymerizable monomer that is an acid group-free polymerizable monomer or a mixture of two or more acid group-free polymerizable monomers, having a solubility of water at 25° C. of 25% by weight or less as the component (c) must be contained in an amount of 20 ⁇ 40% by weight in the polymerizable composition of the dental adhesive composition.
  • the polymerizability of the dental adhesive composition becomes worse, whereby the adhesive layer cannot be reinforced, whereas when it exceeds 40% by weight, not only the permeability into the tooth structure becomes worse, but also, since the proportion in which the acid group-containing polymerizable monomer or water is contained is inevitably lowered, an etching effect is reduced, and the dentinal adhesive properties are lowered.
  • the water as the component (d), which is used in the polymerizable composition of the dental adhesive composition according to the present invention, is essential for making the polymerizable monomer containing the phosphoric acid group as the component (a) and the polymerizable monomer containing a plurality of carboxyl groups in one molecule, or being readily reactive with water to generate a plurality of carboxyl groups in one molecule as the component (b) act to effect dentinal decalcification and the like.
  • the water as the component (d) are preferred distilled water, purified water, ion-exchange water, and deionized water.
  • the water as the component (d) must be contained in an amount of 15 ⁇ 50% by weight in the polymerizable composition of the dental adhesive composition.
  • the dentinal decalcification is weak, and the dentinal adhesive properties are lowered, whereas when it exceeds 50% by weight, the polymerization properties of the dental adhesive composition become worse, whereby the dentinal adhesive properties are lowered.
  • the polymerizable composition of the dental adhesive composition according to the present invention may be compounded with (g) a water-soluble, volatile organic solvent.
  • a water-soluble, volatile organic solvent examples include acetone, methanol, ethanol, isopropyl alcohol, and methyl ethyl ketone. These water-soluble, volatile organic solvents may be used either singly or in admixture of two or more thereof. Of these are particularly preferred ethanol and acetone.
  • the water-soluble, volatile organic solvent as the component (g) When the water-soluble, volatile organic solvent as the component (g) is compounded in the polymerizable composition, it becomes easy to make the respective polymerizable monomers (a), (b) and (c) compatible with the water (d), thereby enabling to obtain a dental adhesive composition with high transparency. Further, even when the compounding amount of the water-soluble, volatile organic solvent as the component (g) is too short to achieve the compatibility, the dental adhesive composition can be supplied in an emulsified state.
  • spherical blocks such as alumina and zirconia are optionally charged into a container accommodating the dental adhesive composition, and before the actual use, the container is properly shaken and provided for the use.
  • a suitable amount of the water-soluble, volatile organic solvent as the component (g) is 0.1 ⁇ 35% by weight in the polymerizable composition of the dental adhesive composition.
  • the adhesive interface and the adhesive layer are more strengthened, thereby enhancing the dentinal adhesive properties, it is necessary to have (e) a photo-polymerization initiator included in the dental adhesive composition according to the present invention.
  • a photo-polymerization initiator included in the dental adhesive composition according to the present invention.
  • the photo-polymerization initiator as the component (e) is further compounded in the polymerizable composition of the dental adhesive composition according to the present invention, thereby undergoing photo-polymerization, the adhesive properties can be thoroughly exhibited, and as a result, it becomes possible to obtain a one-pack type dental adhesive composition.
  • the photo-polymerization initiator as the component (e) which can be used in the present invention, are employable known photo-polymerization initiators that have hitherto been used for dental compositions.
  • Examples thereof include ⁇ -diketone compounds, ketal compounds, anthraquinone-based compounds, thioxanthone-based compounds, benzoin alkyl ether-based compounds, acyl phosphine oxide-based compounds, and ⁇ -aminoketone-based compounds.
  • camphorquinone benzil, diacetyl, benzyl dimethyl ketal, benzyl diethyl ketal, benzyl di(2-methoxyethyl) ketal, 4,4′-dimethylbenzyl-dimethyl ketal, anthraquinone, 1-chloroanthraquinone, 2-chloroanthraquinone, 1,2-benzanthraquinone, 1-hydroxyanthraquinone, 1-methylanthraquinone, 2-ethylanthraquinone, 1-bromoanthraquinone, thioxanthone, 2-isopropylthioxanthone, 2-nitrothioxanthone, 2-methylthioxanthone, 2,4-dimethylthioxanthone, 2,4-diisopropylthioxanthone, 2-chloro-7-trifluoromethylthioxanthone, thio
  • photo-polymerization initiators may be used either singly or in admixture of two or more thereof. Of these are particularly preferred camphorquinone and 2,4,6-trimethylbenzoyl diphenylphosphine oxide.
  • the photo-polymerization initiator as the component (e) must be compounded in an amount of 0.1 ⁇ 5.0 parts by weight based on 100 parts by weight of the polymerizable composition. When the amount of the photo-polymerization initiator as the component (e) is less than 0.1 parts by weight, the effects as the photo-polymerization initiator cannot be exhibited. On the other hand, even when it exceeds 5.0 parts by weight, the effects as the photo-polymerization initiator are no more improved.
  • a photo-polymerization accelerator can be used in combination.
  • an aromatic tertiary amine, an aliphatic tertiary amine, and the like are effective.
  • Specific examples of the photo-polymerization accelerator that can be used include N,N-dimethyl-p-toluidine, N,N-diethyl-p-toluidine, N,N-dimethylaniline, N,N-bis(2-hydroxyethyl)-p-toluidine, N,N-dimethylaminoethyl methacrylate, triethanolamine, methyl 4-dimethylaminobenzoate, ethyl 4-dimethylaminobenzoate, isoamyl 4-dimethylaminobenzoate, triethylamine, N-ethyldiethanolamine, and triethanolamine.
  • these photo-polymerization accelerators may be used either singly or in
  • the polymerizable composition of the dental adhesive composition according to the present invention is compounded with a predetermined amount of (f) a viscosity modifier having a mean particle size of 0.01 ⁇ 0.05 ⁇ m.
  • a viscosity modifier having a mean particle size of 0.01 ⁇ 0.05 ⁇ m as the component (f) is compounded, there are brought effects such that the viscosity with which the control of the coating properties, fluidity of the dental adhesive composition and the thickness of the adhesive layer according to the present invention are greatly influenced, is adjusted and that the intimacy with a composite resin can be improved, thereby enabling to easily undergo the filling operation of the composite resin.
  • the dental adhesive composition according to the present invention is supplied in an emulsified state, it is possible to make the emulsification more stable by compounding the viscosity modifier having a mean particle size of 0.01 ⁇ 0.05 ⁇ m as the component (f).
  • the viscosity modifier having a mean particle size of 0.01 ⁇ 0.05 ⁇ m as the component (f) are employable ultra fine inorganic fillers such as aerosil silica, aluminum oxide, and titanium dioxide. If desired, a silica glass powder, a barium glass powder, and the like may be used. Also, these viscosity modifiers may be provided for the use after subjecting to a silane coupling treatment.
  • a glass powder having a reactivity with an acid such as a fluoroaluminosilicate glass, cannot be used because it is reactive with the phosphoric acid group-containing polymerizable monomer as the component (a) or the polymerizable monomer containing a plurality of carboxyl groups in one molecule, or being readily reactive with water to generate a plurality of carboxyl groups in one molecule as the component (b).
  • the compounding amount of the viscosity modifier having a mean particle size of 0.01 ⁇ 0.05 ⁇ m as the component (f) greatly varies depending on the mean particle size and surface properties of the ultra fine inorganic filler and hence, cannot be unequivocally defined.
  • the viscosity modifier having a mean particle size of 0.01 ⁇ 0.05 ⁇ m as the component (f) is compounded in the dental adhesive composition together with the polymerizable composition so that the viscosity of the whole of the dental adhesive composition is 0.1 ⁇ 1 Pa ⁇ s.
  • the viscosity of the dental adhesive composition is less than 0.1 Pa ⁇ s, the viscosity of the dental adhesive composition is low, the workability of the adhesion is poor, and the strength of the adhesive layer by the viscosity modifier cannot be expected so that the dentinal adhesive properties are lowered.
  • it exceeds 1 Pa ⁇ s the dentinal permeability of the dental adhesive composition is poor so that the dentinal adhesive properties are lowered.
  • the dental adhesive composition according to the present invention may be further compounded with trace amounts of a UV light absorber, a coloring agent, a polymerization inhibitor, etc., if desired.
  • each of the components (a) to (d) as well as the components (f) and (g) was compounded in a compounding ratio as shown in Table 1 to prepare a one-pack type dental adhesive composition.
  • the dentinal adhesive strength, the viscosity of the dental adhesive composition, and the solubility of water at 25° C. to the acid group-free polymerizable monomer were respectively measured.
  • the results obtained are summarized and shown in Table 4.
  • the amount of the viscosity modifier having a mean particle size of 0.01 ⁇ 0.05 ⁇ m as the component (f) is shown based on 100 parts by weight of the polymerizable composition.
  • camphorquinone and isoamyl 4-dimethylaminobenzoate as the photo-polymerization initiator and the photo-polymerization accelerator as the component (e) were compounded in an amount of 0.5 parts by weight and 1.0 part by weight, respectively based on 100 parts by weight of the polymerizable composition.
  • the surfaces of fresh bovine anterior teeth were polished by a #600 waterproof polishing paper under pouring water so that five enamel surfaces and five dentin surfaces were exposed.
  • a silicone rubber-made mold having a height of 2.0 mm and provided with a hole having an inner diameter of 5.0 mm was placed on the adherent surface, and a photo-polymerization type composite resin (the product name: UniFil S, made by GC Corporation) was filled therein. Thereafter, the filled resin was cured upon irradiation with light for 40 seconds by the above-described dental visible light irradiator. 4.
  • the test sample was immersed in water at 37° C. for one day, and an acrylic resin-made rod for tension was then installed in an upper portion of the test sample.
  • test sample was subjected to a tensile test by a universal tester (the product name: Autograph, manufactured by Shimadzu Corporation) at a cross-head speed of 1.0 mm/min. (Viscosity of Dental Adhesive Composition)
  • the viscosity of the compounded dental adhesive composition was measured by a viscometer (the product name: MODEL DV-III, manufactured by Brookfield Engineering Laboratories). The measurement conditions are as follows. Spindle: SC4-14, temperature: 23° C., shear rate: ⁇ fraction (1/60) ⁇ sec.
  • Viscosity modifier (a) (b) (c) (d) (g) (part by weight) MDP 4-MET HEMA GDMA TEGDMA UDMA Water EtOH OX50 A50 A200 A380 R972 COK84 Ex. 1 4 16 2 13 13 2 25 25 13 Ex. 2 4 16 17 10 3 24 26 10 3 Ex. 3 3 17 15 15 27 23 3.5 3.5 Ex. 4 3 17 5 15 5 5 28 22 4 4 Ex. 5 2 30 15 5 10 22 16 7 Ex. 6 2 20 10 10 10 38 10 2.5 2.5 Com. 4 16 2 13 13 2 25 25 4 Ex. 1 Com. 4 16 17 10 3 24 26 3 Ex. 2 Com. 3 17 15 15 27 23 Ex. 3 Com.
  • Comparative Examples 1 to 4 are an example where the viscosity modifier as in Examples 1 to 4 is not compounded, or only a small amount of the viscosity modifier is compounded. Any of the dental adhesive compositions of Comparative Examples # 1 to 4 had a viscosity of less than 0.1 Pa ⁇ s.
  • Examples 7 to 12 and Comparative Examples 5 to 7 Using dental adhesive compositions each having a compounding ratio as shown in Table 2, various tests were carried out in the same test manners as in Example 1. The results obtained are summarized and shown in Table 4.
  • the type and compounding amount of each of the photo-polymerization initiator and the photo-polymerization accelerator are the same as in Example 1.
  • Viscosity Polymerizable composition modifier (a) (b) (c) (d) (g) (part by weight) MDP PhenylP PM21 PM2 4-MET HEMA GDMA TEGDMA UDMA Water EtOH A50 COK84 Ex. 7 3 16 17 10 3 25 26 7 4 Ex. 8 2 20 2 13 13 2 24 24 10 3 Ex. 9 2 1 1 16 15 15 25 25 10 12 Ex. 10 2 20 2 14 14 24 24 9 3 Ex. 11 2 18 15 5 10 22 28 12 1 Ex. 12 1 1 20 18 10 2 26 22 7 Com. 2 20 25 5 30 18 10 3 Ex. 5 Com. 2 18 30 10 10 30 9 3 Ex. 6 Com. 2 18 15 2 53 10 6 3 Ex.
  • Examples 13 to 17 and Comparative Examples 8 to 11 Using dental adhesive compositions each having a compounding ratio as shown in Table 3, various tests were carried out in the same test manners as in Example 1. The results obtained are summarized and shown in Table 4. Here, camphorquinone and 2,4,6-trimethylbenzoyl diphenylphosphine oxide as the photo-polymerization initiator were compounded in an amount of 0.5 parts by weight and 2.0 parts by weight, # respectively based on 100 parts by weight of the polymerizable composition.
  • Viscosity modifier (a) (b) (c) (d) (g) (part by weight) MDP 4-MET HEMA GDMA TEGDMA UDMA Water EtOH A50 A200 R972 Ex. 13 3 24 24 5 10 34 3 Ex. 14 2 24 15 5 10 34 10 2 1 Ex. 15 2 24 10 15 5 10 34 2 0.5 Ex. 16 3 18 24 5 10 40 2 Ex. 17 3 18 15 5 10 44 5 1 1 Com. Ex. 3 39 8 16 34 3 1 8 Com. Ex, 24 10 15 5 10 36 2 0.5 9 Com. Ex. 3 38 59 1 1 10 Com. Ex.
  • Comparative Example 12 A conventional dental adhesive composition (the product name: UniFil Bond, made by GC Corporation) was tested for the adhesive strength to an enamel and the adhesive strength to a dentin. This “UniFil Bond” is a two-step type dental adhesive composition composed of a self-etching primer and a bonding agent. The test for the adhesive strength was carried out in the following manner.
  • the self-etching primer was applied and dried by low-pressure air, and then the bonding agent was applied, followed by irradiation with light for 10 seconds by a dental visible light irradiator (the product name: GC New Light VLII, manufactured by GC Corporation). Thereafter, the # operations 3 and 4 of the dentinal adhesive strength test as described above were carried out, thereby undergoing the test for the adhesive strength to a tooth structure. As described above, in this Comparative Example, the application operation of the self-etching primer and the drying operation by low-pressure air were necessary.
  • the dental adhesive composition according to the present invention is a dental adhesive composition to be used for adhering a dental restoration material to a tooth structure, which does not require a pre-treatment such as an etching treatment and a priming treatment, can be used in one step of only an adhesion operation by a bonding agent application treatment, does not require mixing of two or more components at the time of use, and that can keep a high adhesive strength within an oral cavity over a long period of time. Accordingly, the present invention is greatly valuable in contributing to the dental remedy.
  • a pre-treatment such as an etching treatment and a priming treatment

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  • Oral & Maxillofacial Surgery (AREA)
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US20040254261A1 (en) * 2003-03-28 2004-12-16 Gc Corporation Dental composition
US20090299006A1 (en) * 2006-05-24 2009-12-03 Kazuya Shinno Dental Adhesive Primer Composition
US20090304622A1 (en) * 2006-05-11 2009-12-10 Charite-Universitatsmedizin Berlin Method and means for infiltrating enamel lesions
US20100015578A1 (en) * 2006-12-13 2010-01-21 Afshin Falsafi Methods of using a dental composition having an acidic component and a photobleachable dye
US8029286B2 (en) 2003-08-12 2011-10-04 3M Innovative Properties Company Self-etching dental compositions and methods
WO2012064573A2 (en) 2010-11-10 2012-05-18 3M Innovative Properties Company Adhesive composition suitable for dental uses
US8404144B2 (en) 2002-12-30 2013-03-26 3M Innovative Properties Company Compositions including polymerizable bisphosphonic acids and methods
US8465284B2 (en) 2004-07-08 2013-06-18 3M Innovative Properties Company Dental methods, compositions, and kits including acid-sensitive dyes
US8722760B2 (en) 2004-08-11 2014-05-13 3M Innovative Properties Company Self-adhesive compositions including a plurality of acidic compounds

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JP5597457B2 (ja) * 2010-06-29 2014-10-01 クラレノリタケデンタル株式会社 歯科用組成物の製造方法
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JP2018060061A (ja) * 2016-10-05 2018-04-12 コニカミノルタ株式会社 電子写真感光体および画像形成装置
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US20090304622A1 (en) * 2006-05-11 2009-12-10 Charite-Universitatsmedizin Berlin Method and means for infiltrating enamel lesions
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EP1287805B1 (en) 2004-11-10
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JP4926348B2 (ja) 2012-05-09
EP1287805A1 (en) 2003-03-05
DE60201871T2 (de) 2005-10-20
ATE281821T1 (de) 2004-11-15
JP2003073218A (ja) 2003-03-12

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